Latest Period
Q2 2026
Security Snapshot
Magnera Corp - Common Stock (MAGN) Institutional Ownership
CUSIP: 55939A107
13F Institutional Holders and Ownership History from Q3 2024 to Q2 2026
Institutions Reporting
175
Shares (Excl. Options)
36,361,609
Price
$11.75
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- Security type / class
- Equity / Common Stock
- Symbol
- MAGN on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 36,361,609
- Total 13F value
- $427,239,414
- Portfolio coverage rank
- 0.01%
- Share change
- -208,433
- Value change
- -$609,420
- Number of holders
- 175
- Shares outstanding
- 35,672,897
- SEC-reported price per share
- $13.84
- Insider filing price
- $13.84
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MAGN - Magnera Corp - Common Stock is tracked under CUSIP 55939A107.
- 175 institutions reported positions in Q2 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 171 to 175 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $347,079,479 to $427,239,414.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 175 institutions filings for Q2 2026.
Security key
55939A107
Latest holder period
Q2 2026
13F holders
175
13D/G owners
6
CIK / CUSIP context first
Open Q2 2026 holders
MAGN full holder history
Magnera Corp SEC filings
Magnera Corp company facts
Magnera Corp insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 55939A107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
6
Security
MAGN
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Newtyn Management, LLC | 7.7% | +22% | $26,247,600 | +$4,645,635 | 2,760,000 | +22% | Newtyn Management, LLC | 31 Mar 2026 |
| BlackRock, Inc. | 7.1% | $30,433,104 | 2,519,401 | BlackRock, Inc. | 30 Jun 2025 | |||
| Madison Avenue Partners, LP | 4.4% | -12% | $15,126,758 | -$1,807,214 | 1,590,616 | -11% | Madison Avenue International LP | 31 Mar 2026 |
| Cetus Capital VI, L.P. | 4.4% | -32% | $19,671,107 | -$8,586,976 | 1,561,199 | -30% | Cetus Capital VI, L.P. | 28 Jul 2026 |
| MORGAN STANLEY | 3.9% | -28% | $17,529,662 | -$6,311,441 | 1,391,243 | -26% | Morgan Stanley | 30 Jun 2026 |
| Ancora Advisors LLC | 1.5% | -77% | $8,072,058 | -$20,442,255 | 533,161 | -72% | Ancora Advisors LLC | 31 Dec 2025 |
As of 30 Jun 2026, 175 institutional investors reported holding 36,361,609 shares of Magnera Corp - Common Stock (MAGN). This represents 102% of the company’s total 35,672,897 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
74%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Newtyn Management, LLC | 7.8% | 2,800,000 | +1.4% | 4.1% | $32,900,000 |
| BlackRock, Inc. | 7.3% | 2,596,578 | +8.6% | 0% | $30,509,792 |
| Engine Capital Management, LP | 6.3% | 2,243,827 | 0% | 2.6% | $26,364,967 |
| LITTLEJOHN & CO LLC | 5.3% | 1,889,088 | -22% | 28% | $22,196,784 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.4% | 1,563,111 | +1.9% | 0% | $18,366,554 |
| MORGAN STANLEY | 4.3% | 1,534,192 | -22% | 0% | $18,026,769 |
| Madison Avenue Partners, LP | 3.7% | 1,302,066 | -18% | 0.66% | $15,299,276 |
| Diameter Capital Partners LP | 3.4% | 1,205,793 | 0% | 1.5% | $14,168,068 |
| DG Capital Management, LLC | 3.1% | 1,101,476 | -8.8% | 4.5% | $12,942,343 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4% | 862,384 | +11% | 0% | $10,135,645 |
| CANYON CAPITAL ADVISORS LLC | 2.3% | 810,000 | 0% | 1.1% | $9,517,500 |
| D. E. Shaw & Co., Inc. | 2.2% | 789,745 | -12% | 0.01% | $9,279,504 |
| Clearline Capital LP | 2.1% | 741,096 | +0.38% | 0.56% | $8,707,878 |
| STATE STREET CORP | 1.9% | 671,927 | +2.3% | 0% | $7,895,142 |
| JB CAPITAL PARTNERS LP | 1.8% | 655,000 | 0% | 1.2% | $7,696,250 |
| THOMPSON SIEGEL & WALMSLEY LLC | 1.8% | 649,806 | +13% | 0.14% | $7,635,000 |
| JPMORGAN CHASE & CO | 1.7% | 610,865 | -26% | 0% | $7,238,749 |
| Verition Fund Management LLC | 1.7% | 607,303 | +40% | 0.05% | $7,135,810 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1.7% | 601,599 | +15% | 0.03% | $7,068,788 |
| AMERICAN CENTURY COMPANIES INC | 1.7% | 599,991 | +171% | 0% | $7,049,894 |
| AMERIPRISE FINANCIAL INC | 1.6% | 578,498 | +14% | 0% | $6,797,353 |
| DIMENSIONAL FUND ADVISORS LP | 1.6% | 571,344 | +125% | 0% | $6,713,496 |
| Assenagon Asset Management S.A. | 1.6% | 558,957 | -25% | 0.01% | $6,567,745 |
| UBS Group AG | 1.4% | 506,934 | +72% | 0% | $5,956,475 |
| AQR CAPITAL MANAGEMENT LLC | 1.3% | 479,549 | +229% | 0% | $5,634,702 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
8
Latest
Q2 2026
Rows shown
1-8 of 8
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 36,361,609 | $427,239,414 | -$609,420 | $11.75 | 175 |
| 2026 Q1 | 36,546,072 | $347,079,479 | -$22,204,194 | $9.51 | 171 |
| 2025 Q4 | 37,451,836 | $567,024,194 | +$17,241,151 | $15.14 | 186 |
| 2025 Q3 | 36,750,467 | $430,715,387 | -$35,491,046 | $11.72 | 173 |
| 2025 Q2 | 39,691,539 | $479,478,188 | +$30,588,844 | $12.08 | 182 |
| 2025 Q1 | 35,171,630 | $638,750,519 | +$3,666,137 | $18.16 | 210 |
| 2024 Q4 | 34,978,922 | $635,557,524 | +$627,755,115 | $18.17 | 227 |
| 2024 Q3 | 142,295 | $725,642 | +$725,642 | $9.50 | 4 |